Her Personality: 

All Temmies share an erratic manner of speech, where they often exclude letters, mix lower and upper cases, make inconsistencies, etc. There are some exceptions, however; Bob always speaks in perfect English, the Temmie Shopkeeper will speak in fluent English when the protagonist refuses to sell an item she wants, and regular Temmies in-battle will speak in somewhat proper English when denied Temmie Flakes.